[Xperia Z][INFO][REF] All the info you need before you begin
request you to sticky this thread
let me begin by introducing myself, i am developer for Xperia devices (X10, ARC, PLAY, S, T) and am the Lead Developer of Team UtterChaos, member of Team ICX and was associated with Team FreeXperia, ... i have some experience in development for Xperia devices, specifically in kernels, rooting & recoveries and i have various how-to, reference threads which are very helpful to new & advanced users alike across various device communities... i hope even this thread will be useful to everyone... if you would like to know what things i have worked on before feel free to check some of the links in my signature below...
so some of u must be new to the Sony Xperia family & even if u are not this should be useful... this thread should get u up to speed on what you need to know for this device...
i will try to cover some very basic things and try to touch upon some advanced topics...
i will be dividing this thread into various sections, and each section will point to an individual post...
newest Sony devices have three boot modes... these bootmodes can be reached when device is powered off...
Normal - just press power button and device starts booting
Flashmode - this mode is used to flash stock OFFICIAL firmware using flashtool, denoted by GREEN LED (this is similar to DOWNLOAD/ODIN mode of the Samsung devices)
Fastboot mode - this is a special mode, denoted by BLUE LED, used when we want to flash custom kernel, custom system images, for that we need to unlock bootloader, i will tell more details about this later...
[ various key combinations ]
this is most important part...
known key combinations so far:
while device is power OFF
Volume Up + USB cable connected to PC -> FASTBOOT MODE (BLUE LED will light up)
Volume Down + USB cable connected to PC -> FLASHMODE (GREEN LED will light up)
while device is power ON
Volume Up + POWER (for 10 seconds) -> resets the battery, its like removing the battery and putting it back in [device will vibrate once]
Volume Up + POWER (for additional 5 seconds, total 15 seconds) -> will power off hard, device will power down [device will vibrate thrice]
[ understanding About Phone ]
(check attached image if this one above is not showing up)
What it all means for u:
Sony has released this device with 3.4.0 kernel. When custom kernels are released (they will surely be soon) this string will change.
(Crudely) this is a software interface which communicates with radio -> gsm/wcdma (2g/3g)/LTE, basically acts as a base for the main OS to ‘talk-to’ the hardware on the phone [I know this explanation isn’t precise even partly incorrect.. if someone can help me out I will update it]
This is similar to the "radio" image of the HTC devices.
Build number:[aka firmware version]
This is dependent on which firmware u flash on ur phone and is linked to the baseband version.
Btw some devs use this field to add their own ‘signature’ to the ROM so if u are using custom ROMs this field might be varying. Though the Baseband version for a particular firmware remains same.
what is firmware?
The firmware is a package containing all the official software for a particular build. It will contain system, kernel & baseband files. Generally the firmware is supplied (on forums) in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool.
what are the ways to update/repair firmware?
SEUS (Sony Ericsson Update Service) / PCC (PC Companion) / EMMA are all official ways to update to new or repair existing firmware on your device. SEUS/PCC are available to all users (consumers), EMMA is special and is only available to select individuals. This requires you to connect device to PC and then the software will check for updates and download them over the internet.
Updates can also be sent as FOTA (Firmware over-the-air)/OTA (over-the-air) updates where in you can download and install the updates without the need to connect to PC/any software.
FlashTool is an unofficial user-created tool, but the best way to flash official firmwares. Generally the firmware is supplied in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool. Thus FlashTool is the easiest way to do offline updates, just download the FTF file, it keep on PC and flash ur device when ever you want to.
Flashtool is one of the MOST IMPORTANT piece of software for ur phone, it is an unofficial, but the best way to flash official firmwares on both locked and unlocked bootloader devices. Generally the firmware is supplied in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool. Thus FlashTool is the easiest way to do offline updates, just download the FTF and keep on PC and flash ur device when ever you want to. One can also flash select partitions using FlashTool, say you want to flash baseband(radio) from newer/older firmware but want to keep the main system the same u can do that using newest FlashTool! FlashTool also supports fastboot modes! so if you are not very comfortable with command line then u can use the FastBoot Toolbox inbuilt into FlashTool to fastboot the kernels!
FlashTool can be used to flash both locked and unlocked bootloaders devices.
For all flashtool informations (download links, release notes, FAQ) go to the Flashtool Homepage
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